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(No Model.) 2 Sheets-Sheet 1.

J. S. & E. G. ROBINSON.

SULKY PLOW. No. 316,572. I Patented Apr. 28. 1885.

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f. I. WITNESSES Attorney.

N. PETERS. Phuwulho n hur. Washington D. c

.is an elevation of the same.

1 UNITED STATES ArENr FFMJE.

JOHN S. ROBINSON AND EDSON O. ROBINSON, OF OANANDAIGUA, N. Y.

SULKY-PLOW.

SPECIFICATION forming part of Letters Patent No. 316,572, dated April 28, 11.885.

Application filed December 6, 1884. No model.)

To aZZ whom it may concern.-

Be it known that we, JOHN S. ROBINSON t'on,and the'novel features thereof specified in the annexed claims.

Our improvements in sulky-plows are illustrated in the accompanying drawings,in which Figure 1 is a side elevation. Fig. 2 is a plan View. Fig. 3 is a rear elevation. Fig. 4 is a plan view of the circle-plate detached. Fig. 5 Fig. 6' represents one of the blocks by which the bail is attached to the circle-plate, as seen from the in side. Fig. 7 is a side view of thesaid blocks. Fig. 8 is a section through one of the collars on the bail. Fig. 10 is a side view of the same. Fig. 11 is a section through the circle-plates on the line as m, Fig. 4. Fig. 12 represents the crank attached to the bail,on an enlarged scale. Fig. 13 is a side view of the foot-bar detached.

In the accompanying I drawings, represent ing our improved sulky-plow, A A are the wheels; B, the plow-beam; O, the mold-board;

D, the frame; G,the tongue; H, the plowwheel; I I, the levers by which the position of the wheels A A is controlled, and J the 'means of the plate d, bolts 1 f, and strap b,

the bolts serving to clamp the beam firmly between the plate and the strap. The upper and lower circle-plates, K K, are connected together, so that they may have a. swiveling motion relatively to each other aboutthe stud g, Figs. 4. and 5, by the bolts h h, which pass through the slots t t" in the upper plate. The

Fig. 9 is an elevation of the same.

swiveling motion is represented by the dotted lines in Fig. 4, its effect being to allow the plow to yield or swing laterally relatively to the frame or wheels in case the plow strikes an obstruction, or to allow the sulky to make a similar movement relatively to the plow, if necessary. The stud g is cast on the lower circle-plate, and is fitted to an opening in the upper circle-plate. On the lower side of the lower circle-plate a rib, c, bears against the upper side of the plow-beam. The bolts h h pass through bosses on the lower circle-plate, as represented at j, Fig. 11, so that the nuts on the lower ends of the bolts may be screwed up tight without interfering with the free swiveling of the plates. plate is preferably provided with the circular ribs k, projecting downward-around the edges of the lower circle-plate. The bail L is pro- The upper circle vided on each end with the cranks c c, which are pivoted in the rear ends of the/frame D, being secured therein by split pins or other suitable devices. The bail is attached to the upper circleplate by the divided boxes Z Z Z Z and lugs m in m m. The lugs m in rise up from the upper circle-plate at a suitable dis tance apart to receive the boxes between them, two pairs of lugs being used on opposite sides of the stud g. The boxes are secured in the lugs by the bolts 11/ t. The bail passes through the opening 0, being allowed to turn freely therein. The bail is prevented from shifting laterally in the boxes by means of the collars p p.

As represented in Fig. the bolts n a through the boxes H are placed at different distances from the opening 0, so that by reversing the position of the blocks the circle-plate andthe plow attached thereto can be adjusted at an angle with the bail and frame of themachine, as indicated by the dotted lines L in Fig. In this-way the plow and mold-board may be placed at an angle with the bail and frame, a proceeding which is frequentlyan advantage in plowing on sidehills. The construction of the collars p p is represented on an enlarged scale in Figs. 8, 9, and 10. The collars consist of abent strap, r, and

two clamps, s 8, attached together so as to cause friction on the bail L by means of the c, the holes q for p of the clamps/for the reception of the hooks.

The strap is bent to fit the bail, and the interior surface of the clamps is formed of a cor-f responding shape.

It will be observed that when the clamps s s are drawn together by the bolt -t the assemblage of parts constituting the collar will be, firmly clamped on the bail, so as to prevent the bail from shifting laterally through the boxes ll. This construction of the collar in --three :parts enables the collar to be used on bailsof differentdiameters, or on t'hose which;

have become worn fronnnse. :It also insures an 'efi'ective grip on the bail.

As already described, the pranks '0 'c on=the end ofthe bail are lpivoted in the rear end of r theba'ilis-connected by means of the arm and-connectionm with the lever J, which is pivoted to the frame D at 'l so that its upper end may be conveniently within reach of the driver riding on the seat M. The lower end o'fthe lever is pivoted tothe connection-matz,

Fig. i. Theconnection reaches backward,-'being given a suitable upward bend, and is pivoted =at-its rear endto t'he pin -or stud b in the arm at, which is fastened to the'crank -c of the bail L. The arrangementis such that'bypulli-ng the upper end of the leverJba-ckwa-rd the arm will be swung forward, thereby lifting up the-bail and the;plowattached'thereto,and,

if desired, drawing theplow entirely out of p the furrow. By this means the plow is withdrawn from theground at the'end 'of the furrow, "and :again lowered into thegroundat'the commencementofthenextfurrow. These operations are-effected "by throwing the lever J forward or backward, as may be required. A notched s'egment,d.,'secured :to the franiawith thenotchesofwhi-ch aspring-catch, ef,engages, enables the driver to fasten the lever -J in an-y desired position. The pin Nontheendof the arm n; (passes through a slot, f, :Fig. '12, in end of the connection :a: for the purpose of alilow ing-a limited rise in the sul ky without :li'fting the rplow in passing over i'rregular gronnd or obstructions.

.The operation will be readily understood iromilii'gs. land 12, theparts being-"shown in lines in Fig. 12 in "the position occupied the-rearendo'f the slot to permit the bail to swing a short distance down-ward to'efi'ect the necessary relative adjustment of the sulky and the plow. While the sulky rises to pass over the obstruction the bail swings downward, the pin 1) traveling outward or rearward in'the slot f, so that the plow is not raised, but continues its course. The slot f may be made in the end of the connection 012; but we prefer to fasten to the endtof thejconnection a casting, Fig. 12, in which the slot f is formed. We have found this-arrangement to operate successfully in practical use. The arm w may be attached to the squared end of the crank a, being fastened thereon bya split key and washer.

ThesleverJ is conveniently-formed of two parts, the npper end being of wood.

The depth of the furrow made by the gp'lo-w is regulated by the wheel H, attached tothe zp'low-beain *by the standard N; "the wheel .A being set when the plow is in use so zas torr-u n on the ground alongside of the plow, as indi cated by the dotted lines A, Figs. 1 and 3, while the right-hand wheel Aruns on 'theibottom-o1" the last furrow pic-wed.

In order to enable the driver to hold the plow down to its work on encountering a hard piece of ground, we attach to the :p'lowbeamor the clevis the foot-bar P, which oxtends upward alongside the tongue and :has its upper end adapted to receive the .pressure of the drivers -foot when necessary. The foot-bar passes freely :through an eye or :loop, t, Fig. 1, on the tongue, being held in the proper position thereby.

:1. The'combination, in a sulky-plow, "of-the main frame D,and 'bail L, provided with arnisc c, .pivoted in the rearward extensionof the said frame, and provided -with crank "to, 'connected with lever J by the slotted connecting- 105 bar as, substantially-asdescribed.

2. Thecombination, with the :main frame and plow of a su'l'ky-plow, of the slotted cirole-plates K K, attached together by :bolts (h h, substantially :as described.

3. The combination, with the main frame and rplow of asulky-plow, of the 'circleaplate K, attached to therplow-beam, and the :ci'rdleplate K, provided with lugs vm m, and 001']- nected to the bail L by means of the-divided n 5 blocks ZZ, substantially as described.

.4. The-combination, with the unain frame andp'lowofasulky-rplow,'ofthedividedirevers- 'i'ble blocks 'Z 1, arranged itorpermit ithe zadgj'ust- :mentxof the plow at an angle with :the franne, 20 substantially as described. JOHN S. ROBINSQ-N." EDSON O. ROBE-N801? In presence :of-

J. HENRY .METOA'DF, GEORGE 00.0 1.12. 2. 

